This is an optional Robinson Racing Hardened Steel Idler Gear, and is intended for use with the Associated SC10, T4, B4, and any other vehicle that uses the ASC9360 idler gear. This part is precision machined from solid steel, then extra hardened for durability and dependability under the most extreme high power conditions.

Bought one a week ago, raced one night, and the very next practice day the tranny locked up. Tough as nails for sure, ate up everything but itself in the transmission. Another $20 to buy the stock tranny gears and return to stock. Suggestion: just replace the stock idler gear everytime you rebuild the diff. only $2 on A-main)

4 of 6 customers found this review helpful.

William Larkin

Verified Owner

Wednesday, Nov 10 2010 (about 7 years ago)

Robinson Racing Hardened Steel Idler Gear

Tough as nails. Unbreakable. Typical Robinson quality.)

2 of 3 customers found this review helpful.

Rob Rankin

Verified Owner

Thursday, Oct 22 2015 (about 2 years ago)

Robinson Racing Hardened Steel Idler Gear

Bulletproof. Combine with the aluminum diff gear for more durability.)